Originally Posted by FU5E
Having two issue with the Jeep I'm having trouble being sure were to start
1) seems to misfire or hesitate between 40-60 mph does not try to stall or idle weird at this time and no codes
note: has new spark plugs gapped accordingly
2) since installing new trans lines and doing a trans flush I have noticed a hard down shift when coming to a stop several times now.
- need to go on a highway drive and then check fluid did the 15 minute drive maybe I am a little off?
Leaning toward doing the PCV and TPS, I well replace the PCV regardless but am I on track with a TPS? or should I do a throttle body cleaning (it looks ok) or the EGR?
Was the jeep hessitating before you started maintenance? If not then i would go back and look at what you did. double check wires tight and Plugs tight and gapped properly ( could have bumped an electrode accidentally and closed the gap).Or maybe you could have moved a vacuum line and it's leaking now ..
Trans - flushes are not recomended by Jeep . did you use ATF+4 (very important .Global or any other type of fluid is no good) . The PCM and TCM is adaptive , so you could try disconnecting the battery to erase the memory and then take it out for a good drive . It will probably drive and shift like crap for a while though.